Muhammad Salihin Zakaria
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Preferred name
Muhammad Salihin Zakaria
Official Name
Muhammad Salihin , Zakaria
Alternative Name
Zakaria, Muhammad Salihin
Zakaria, M. S.B.
Zakaria, M. S.
Salihin, M. Z.
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Scopus Author ID
56479320900
Researcher ID
HTN-7486-2023

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  • Publication
    Effect of several commercial rubbers as substrates for zinc oxide in the photocatalytic degradation of methylene blue under visible irradiation
    ( 2020-09-01)
    Nordin R.
    ;
    Latiff N.
    ;
    Yusof R.
    ;
    Nawawi W.I.
    ;
    Muhammad Salihin Zakaria
    ;
    Ishak Z.A.M.
    A new approach of mechanical preparation of photocatalyst zinc oxide (ZnO)/rubbers from four types of rubbers: styrene butadiene rubber (SBR), ethylene propylene diene monomer (EPDM), natural rubber (NR), and epoxidized natural rubber (ENR) with 50% epoxidation is presented. This technique is simple, fast and cost effective as ZnO/rubbers were me-chanically mixed using conventional two-roll mill at 27°C for 10 min and compressed into flat sheet. The characteristics of photocatalyst were studied by X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), ultraviolet-visible spectroscopy (UV-Vis) and field emission scanning electron microscope (FESEM). The photocatalytic activity of ZnO/rubbers was evaluated using methylene blue (MB) as a model pollutant under visible light for 300 min. The photocatalytic degradation efficiency of ZnO/SBR is nearly as good as that of ZnO powder (87.32%) compared to ZnO/NR, ZnO/EPDM and ZnO/ENR. This is due to the highest index of conjugated carbon-carbon bond of SBR and hydrogen bonding between ZnO and SBR. The formation of hydrogen bonding was confirmed by FTIR and reduction of energy band gap of ZnO/SBR. The photocatalytic degradation of MB with ZnO/SBR was could be fitted by pseudo-first-order kinetics of the Langmuir-Hinshelwood model.
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